Earth Fleet Command (EFC) is the command structure of the Earth Fleet. It is responsible for the overall operation of the ships constructed with advanced technology procured through the Stargate Program with the primary purpose of Earth Defense. It is a major subordinate command of Homeworld Command.

From 2019 to 2023 it operated under the name Starfleet Command (dropped in part for it's similarity to the fictions Star Trek series). Originally it's Headquarters where in London, however these were bombed in 2021, new headquarters were established in San Francisco, but these again were destroyed in 2023. Now the EFC is headquartered out of a purpose built facility, the centerpiece of the new IJB Midway. Additional fall back facility exist in New York, Montréal, Berlin and Moscow, as well as part of North Atlantic Treaty Organization HQ, the Pentagon, and the new Stargate Command facility as part of the Stargate Atrium.